Why do Boats Float on Water - Do you know why some things float while others sink? It isn't just because of their s…
All storms have two things in common: low atmospheric pressure at the storm’s center, and winds that are created by the…
Have you ever swum in the sea and accidentally swallowed some sea water? It probably made you gag and cough. Sea wate…
In mountainous regions, a river of ice may flow down a valley. This is called a valley glacier. A glacier can move …
What is an ice age? Have you ever tried to make a snowball? Snow is soft and fluffy when it falls from the sky, but…
A transformer can make an electric current smaller or larger. As an electric current flows along the wires from a pow…
You can make a bulb light up by using two wires to join it to a battery. The bulb lights up because an electric c…
Do you know how water gets to the faucets on your kitchen sink? It comes through pipes. Pipes let water flow in th…
What color is the sky? On a sunny day, the sky looks blue. Sometimes, early in the morning and just before sunset, …
Our eyes are good enough for simple stargazing. But they tell us very little about what the stars are really like. T…
Atomic Mass Number - What is Atomic Mass Number? The total number of neutrons and protons in the nucleus (core) of an…
Why do we Need Salt - Importance of Salt in Human Body The human body contains about 60 percent water. Many of our or…
Why do people sweat? Let us imagine that our body is one perpetually lit stove. The food that we take is the fuel tha…
What Causes Aging? When do People Stop Growing? The newborn is on average 48-50 cm long. Over the next twenty yea…
How do we Grow? One feature of the living things is growth. By growth the living being improves its composition and…
The Giraffe is one of the rarest of animals, and very few are to be found in captivity. So if you make a giraffe, which…
The Elephant is one of the oldest forms of animated animals, and is at the same time one of the most popular. Four or f…
A Pair of Jump Standards are made out of two two-by-fours about eight feet long. After planing them smooth on all sides…
Authorities claim that the best materials from which to make bows are mulberry, sassafras, Southern cedar, black locust…
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